- VoIP Enhancements

The IP Network Interface Series 3 line card (hereafter referred to as the IPN-3 card) is the third generation IP Network card in the CSP product line. The following were the first two versions:

Functionally, the IPN-3 card is very similar to the IPN-2 card. Beside some minor differences to a few OAM messages, the IPN-3 interfaces (internally and externally) are backward compatible with the IPN-2 card.

On the IPN-2 card there are three Ethernet ports configured as a Link Aggregation Group (LAG) allowing a 300 Mbps pipes. The IPN-3 card provides six Ethernet ports:

Only two ports need to be trunked because the maximum bandwidth needed does not exceed 200 Mbps (about two DS3 worth of G.711).

This feature allows the CSP to insert the Max-Forwards header in outbound requests from the CSP SIP stack.

The Max-Forwards header is optional and is disabled by default. The host can also configure the Max-Forwards value.

In addition to the existing embedded SIP stack, this ER introduces a SIP stack from Radvision. The stack resides on the host as a standalone stack and is not integrated in SwitchKit.

This implementation gives the developers a direct access to SIP fields and SIP headers, and eliminates the dependency on SwitchKit APIs. Instead, developers will use the Radvision API’s.

Internet Protocol. Part of the TCP/IP family of protocols used to route messages and tracks the addresses of nodes.

Voice over Internet Protocol. The delivery of voice information in digital form in discrete packets rather than in the traditional circuit-committed protocols of the public-switched telephone network (PSTN).

Digital Signal Processor

The protocol used in most local area PC networks. Typically, most Ethernet networks support data transmission speeds up to 10 Mbps, but 100 Mbps is also possible.

Session-Initiation Protocol. A signaling protocol used for establishing sessions in an IP network. A session could be a simple, two-way telephone call, or it could be a collaborative multi-media conference session.

A computer, attached to the Excel platform through an RS-232 or Ethernet link, from which you run the telecommunications application that controls the Excel platform.